Wireless Doorbell, Aogek Waterproof Chime Kit with 52 Melodies & Adjustable Volume; 1 Receiver&1 Push Button,300M/1000Feet Operating Range Portable Plug-inSoho Style With 52 Melodies and Adjustable Volume:The doorbell features 52 chime tones and 4 levers of volume(from 25 ~85db ) for your choice Long Range:Supports working range up to 1000ft/300m in open area,plugin receiver for you to take it to basement,garage or second floor Easy to Use:All you have to do just is pluging the receiver into an electrical outlet(no batteries required for the receiver),fixing push button with tape or screws near the door. And . Then they can work Striking LED Indicator Light :Push button with LED indicator to show itself at night. Receiver also lights up when it has been plugin, flashing while ringing to show someone ring to bell Waterproof rating ensures it can also work when rain day is coming